当前位置: X-MOL 学术J. Am. Chem. Soc. › 论文详情
Orbitally Matched Edge-Doping in Graphene Nanoribbons
Journal of the American Chemical Society ( IF 14.357 ) Pub Date : 2018-01-02 , DOI: 10.1021/jacs.7b11886
Rebecca A. Durr, Danny Haberer, Yea-Lee Lee, Raymond Blackwell, Alin Miksi Kalayjian, Tomas Marangoni, Jisoon Ihm, Steven G. Louie, Felix R. Fischer

A series of trigonal planar N-, O-, and S-dopant atoms incorporated along the convex protrusion lining the edges of bottom-up synthesized chevron graphene nanoribbons (cGNRs) induce a characteristic shift in the energy of conduction and valence band edge states along with a significant reduction of the band gap of up to 0.3 eV per dopant atom per monomer. A combination of scanning probe spectroscopy and density functional theory calculations reveals that the direction and the magnitude of charge transfer between the dopant atoms and the cGNR backbone are dominated by inductive effects and follow the expected trend in electronegativity. The introduction of heteroatom dopants with trigonal planar geometry ensures an efficient overlap of a p-orbital lone-pair centered on the dopant atom with the extended π-system of the cGNR backbone effectively extending the conjugation length. Our work demonstrates a widely tunable method for band gap engineering of graphene nanostructures for advanced electronic applications.
更新日期:2018-01-03

 

分享到
评论: 0
期刊列表
上海交通大学化学化工学院陈刚课题组招聘启事
南方科技大学招聘电子信息材料与器件方向博士后和研究助理教授
【问答】如何培养科研思维?
2017年中科院JCR分区化学大类列表
试剂库存管理
化合物查询
down
wechat
bug